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Pamper party killer Anna Browne has a disturbing history of getting angry and reaching for a lethal weapon. She was jailed today for at least 12 years, and the Herald can now reveal two other brutal crimes she committed.

At just 14 years old, Anna Browne attacked a person and stabbed him.

She was initially charged with attempted murder, but wasn't jailed and, soon after, became a teenage mother.

Browne's 1995 offending was heard before the Youth Court and carries several statutory suppression orders.

The judge also suppressed the identity of Browne's co-offender, who was an adult at the time.

However, the Herald can report that someone was stabbed.

"Given that the only relevance for present purposes is the fact of the conviction in the Youth Court, and the fact that the offending involved the use of a weapon, namely a knife, I cannot see that it is appropriate to now put in the public domain the name of the victim, or the [relationship]," Justice Wylie said.

Before Browne's August murder trial, the Crown tried to use the 1995 attack as propensity evidence, arguing Browne has an inclination to react disproportionately in confrontations by immediately seeking out lethal weapons.

However, Browne's lawyer Marie Dyhrberg QC successfully argued against allowing the stabbing to be included, and said the issue of the trial was proving murderous intent.

Dyhrberg told the court today she was also involved in a professional capacity with the 1995 case.

Justice Simon Moore ruled against introducing the evidence to the jury because of a risk of prejudicing Browne's fair trial rights. He suppressed his decision and Browne's criminal history until today.

Violent crime continues

Ten years later, when Browne was in her mid-20s, her offending continued.

She was sentenced to nine years' imprisonment in January 2005 for wounding with intent to cause grievous bodily harm.

The Herald understands the offending happened after Browne had a dispute with a group who had scared some of her children.

She gathered a posse of supporters for a revenge attack.

Browne's partner was armed with a machete and attacked one of the men.

A Herald story reported that the machete attack on January 23, 2004 almost severed a 26-year-old Otara man's right hand.

Browne orchestrated the attack and acted as a getaway driver, the High Court heard today.

Her partner was also jailed for the attack.

A Parole Board decision, obtained by the Herald, said apart from "lower end" misconduct, Browne's behaviour in prison was "very satisfactory".

She had also been charged and pleaded guilty to being a party to a theft, and was sentenced to one month in jail, which was served concurrently.

However, the Parole Board noted Browne had issues with abuse of alcohol and drugs.

"She described herself as an alcoholic in the past," it said.

"She says that she is still conscious of that and that every day she has to remind herself of it. She seems to have been free of these things for some time now."

Anna Browne was described by the Parole Board in 2012 as not "an undue risk to the safety of the community". Photo / Jason Oxenham

The Parole Board decided that with appropriate conditions Browne would "not be an undue risk to the safety of the community".

"At the time of her offending, she was leading a lifestyle which was involved in highly unsatisfactory and aberrant behaviour. She has settled a great deal since then," they said.

"The baby's birth of course will provide another grounding point for her and she will not lack for support in that care over the future."

It is understood Browne is a mother to six children, aged from 2 to 23.

She was released from prison on May 14, 2012, but under several "special conditions", including attending any counselling deemed necessary by her probation officer.

She was ordered to have a psychological assessment and complete any treatment recommended, while also prohibited from taking or possessing alcohol or illicit drugs.

Her partner, who was also on parole, was described as doing "extremely well".

"Their relationship is to continue and we have no information that [it] is an unsatisfactory one. It seems to have been one of long-standing," the Parole Board said.

"It would be unrealistic at this stage to try and impose conditions around it but we leave it for others who are monitoring and supporting Ms Browne to ensure that [it] is a safe relationship for her."

After being released, Browne worked in sales and labouring jobs and lived with her partner of 20 years in the suburb of Clover Park.